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(11) | EP 1 612 915 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Method and apparatus for dissipating shaft charge |
(57) The present invention relates generally to dissipation of shaft charge. According
to an exemplary embodiment, the present invention provides a charge-dissipating device
that includes a dissipation member disposed in an explosion-proof enclosure. When
mounted to a rotatable shaft of an electric motor, for example, the dissipation member
is configured to generally abut against the rotatable shaft. The dissipation member
dissipates shaft-charge developed in the rotatable shaft during operation of the motor.
By dissipating shaft charge, the likelihood of arcing and/or bearing current (Ib) occurrences are reduced or eliminated. In accordance with another exemplary embodiment,
a transmission member is configured to impart a voltage signal onto the shaft.
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